Improvement in artificial teeth



UNITED STATES PATENT OFFICE.

SAMUEL s. WHITE, or rHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN ARTIFICIAL TEETH.

Specification forming part of Letters Patent No. 38,072, dated March 31, 1863.

To all whom it may concern:

Be it known that I, SAMUEL S. WHITE, of the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new and useful Improvement in Artificial Teeth and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification in which Figures 1 and 2 are inside face views of block-teeth constructed according to my invention. Figs. 3 and 4 are base views of the same. Figs. 5 and 6 are transverse vertical sections of the same.

Similar letters of reference indicate corresponding parts in the several figures.

The object of my invention is to obtain a more secure attachment of the teeth to abase of vulcanite or other material in which they may be secured in the same manner as in vuleanite; and to this end it consists in the construction of a single tooth, or a block of two or more teeth, with one or more horizontal mortises in the inner face and one or more vertical holes for the reception of portions of the vulcanite, or other substance of which the base is composed, by which the tooth or block is firmly secured without being embedded more than is desirable in or having any portion covered to an undesirable thickness with such substance.

To enable others skilled in the art to make teeth according to my invention, I will proceed to describe it with reference to the drawings.

The drawings represent the application of the invention to blocks, Figs. 1, 3, and 5 representing a block of three, and Figs. 2, 4, and 6 one of two, teeth.

a a are the horizontal mortises, and c c the vertical holes. The horizontal mortises are arranged a little above the lingual surfaces of the teeth, extending nearly the whole length of the block, leaving it solid at each end for strength, and the vertical holes are made in the base of the teeth and may communicate with the mortises, as shown in Figs. 1 and 5, or be not quite deep enough for such communication, as shown in Figs. 2 and 6. These holes may have a female screw-thread formed within them, such thread being more especially desirable when they do not communicate with the mortises. In setting the teeth a portion of the vulcanite or other substance of which the baseis composed is pressed into the mortises a a and holes 0 c, and when it has been cooked or has become hard, such portion unites the teeth firmly to the base and prevents their displacement by any strain to which they are subject in use.

In applying the invention to single teeth the mortises and holes are arranged in the same manner. Only one mortise is represented in each of the blocks shown in the drawings. If more than one mortise is used, they are shorter and arranged horizontally in line with each other.

What I claim as my invention, and desire to secure by Letters Patent, is-

The combination, in a tooth or block of teeth, of one or more mortises, a, and one or more holes, 0 c, substantially as herein specified.

SAMUEL S. WHITE.

Witnesses:

M. S. PARTRIDGE, HENRY T. BROWN. 

